railsアプリケーションのheroku上でのデプロイエラー

前提・実現したいこと

Ruby on Rails チュートリアルの「1.5デプロイする」を進めており、herokuにデプロイしたところどうしてもエラーが出てしまいどうしても解決できないません。どなたかご教授願えないでしょうか。

発生している問題・エラーメッセージ

heroku logsの結果は以下です。

Administrator:~/environment/hello_app (master) $ heroku logs
2020-02-02T11:28:03.000000+00:00 app[api]: Build started by user xxxxxxx@xxxxx.com
2020-02-02T11:28:15.228611+00:00 heroku[web.1]: State changed from crashed to starting
2020-02-02T11:28:14.863048+00:00 app[api]: Deploy 8c9c40bc by user xxxxxxx@xxxxx.com
2020-02-02T11:28:14.863048+00:00 app[api]: Release v8 created by user xxxxxxx@xxxxx.com
2020-02-02T11:28:17.793853+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 54580 -e production`
2020-02-02T11:28:17.000000+00:00 app[api]: Build succeeded
2020-02-02T11:28:20.000127+00:00 heroku[web.1]: State changed from starting to crashed
2020-02-02T11:28:20.005177+00:00 heroku[web.1]: State changed from crashed to starting
2020-02-02T11:28:19.981155+00:00 heroku[web.1]: Process exited with status 127
2020-02-02T11:28:19.789289+00:00 app[web.1]: bash: bin/rails: No such file or directory
2020-02-02T11:28:22.447965+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 7827 -e production`
2020-02-02T11:28:24.670925+00:00 heroku[web.1]: State changed from starting to crashed
2020-02-02T11:28:24.584642+00:00 app[web.1]: bash: bin/rails: No such file or directory
2020-02-02T11:28:24.650480+00:00 heroku[web.1]: Process exited with status 127
2020-02-02T11:28:39.426086+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=xxxxxxx.herokuapp.com request_id=e1834934-7f29-4738-8f5d-6c2f2b6ae7d0 fwd="119.83.145.57" dyno= connect= service= status=503 bytes= protocol=https
2020-02-02T11:28:40.053022+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=xxxxxxx.herokuapp.com request_id=3fe79986-9c32-441d-90c1-4c26f49244a9 fwd="119.83.145.57" dyno= connect= service= status=503 bytes= protocol=https
2020-02-02T11:29:22.915837+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=xxxxxxx.herokuapp.com request_id=54b8b950-ea3f-4dfb-80ab-d4bdc2560ad0 fwd="119.83.145.57" dyno= connect= service= status=503 bytes= protocol=https
2020-02-02T11:29:23.559096+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=xxxxxxx.herokuapp.com request_id=c299dd80-8d77-4bf5-b556-ff4bf84c5539 fwd="119.83.145.57" dyno= connect= service= status=503 bytes= protocol=https